<template>
  <div class="login" :style="'background-image:url('+ Background +');'">
    <el-form v-if="!wechatLogin" ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form">
      <h3 class="title">同安智慧实验室</h3>
      <el-form-item prop="username">
        <el-input
          v-model="loginForm.username"
          type="text"
          auto-complete="off"
          placeholder="账号"
        >
          <svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon"/>
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input
          v-model="loginForm.password"
          type="password"
          auto-complete="off"
          placeholder="密码"
          @keyup.enter.native="handleLogin"
        >
          <svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon"/>
        </el-input>
      </el-form-item>
      <el-form-item prop="code" v-if="captchaEnabled">
        <el-input
          v-model="loginForm.code"
          auto-complete="off"
          placeholder="验证码"
          style="width: 63%"
          @keyup.enter.native="handleLogin"
        >
          <svg-icon slot="prefix" icon-class="validCode" class="el-input__icon input-icon"/>
        </el-input>
        <div class="login-code">
          <img :src="codeUrl" @click="getCode" class="login-code-img"/>
        </div>
      </el-form-item>
      <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
      <el-form-item style="width:100%;">
        <el-button
          :loading="loading"
          size="medium"
          type="primary"
          style="width:100%;"
          @click.native.prevent="handleLogin"
        >
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
        <div style="float: right;" v-if="register">
          <router-link class="link-type" :to="'/register'">立即注册</router-link>
        </div>
        <div style="float: right;">
          <span v-if="!wechatLogin" class="link-type" style="margin-right: 20px" @click="wechat">微信登录</span>
          <span v-if="wechatLogin" class="link-type" style="margin-right: 20px" @click="wechat">用户名密码登录</span>
        </div>
      </el-form-item>
    </el-form>

    <div v-if="wechatLogin" class="login-form" style="width: 380px;height: 380px">
      <h3 class="title">同安智慧实验室</h3>

      <div style="width: 340px;height: 250px;text-align: center">
        <img :src="qrcodeUrl" width="60%">
        <div v-if="qrInvalid"
             style="display: table;position: relative;top: 0;left: 45%;text-align: center;width: 204px;height: 204px;margin-left: -90px;margin-top: -200px;background-color: rgba(217,217,217,0.96);">
          <div style="display: table-cell;vertical-align: middle;text-align: center;">
            <p style="text-align: center;">二维码已过期</p>
            <p style="text-align: center;"><span class="link-type" @click="refreshQR">点击刷新</span></p>
          </div>
        </div>
        <div v-if="receiveScan"
             style="display: table;position: relative;top: 0;left: 45%;text-align: center;width: 204px;height: 204px;margin-left: -90px;margin-top: -200px;background-color: rgba(217,217,217,0.96);">
          <div style="display: table-cell;vertical-align: middle;text-align: center;">
            <p style="text-align: center;">微信已扫描</p>
            <p style="text-align: center;"><span>请在微信登录</span></p>
          </div>
        </div>
      </div>
      <div style="float: right;">
        <span v-if="!wechatLogin" class="link-type" style="margin-right: 20px" @click="wechat">微信登录</span>
        <span v-if="wechatLogin" class="link-type" style="margin-right: 20px" @click="userAndPwd">用户名密码登录</span>
      </div>
    </div>
    <!--  底部  -->
    <div class="el-login-footer" style="height: 60px;line-height: 20px">
      <div>Copyright © 2024-2025 www.tonann.cn & TONANN All Rights Reserved.</div>
      <div style="display: flex; justify-content: center;align-items: center">
        <div>
          <a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=52011502002185"
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              3CMhtMiuNAAAAAElFTkSuQmCC" alt=""/>沪公网安备31010302003606号</a>
        </div>
        <div>
          <a style="color:#fff;margin-left: 12px"
             href="http://beian.miit.gov.cn/?token=8ac828bd-7001-4bee-bcd7-1ed385fe5d34"
             target="_blank">沪ICP备11011906号-1</a>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import {getCodeImg} from "@/api/login";
import Cookies from "js-cookie";
import {decrypt, encrypt} from '@/utils/jsencrypt'
import Background from '@/assets/images/background.jpg'
import QRCode from 'qrcode'

export default {
  name: "Login",
  data() {
    return {
      Background: Background,
      codeUrl: "",
      loginForm: {
        username: "",
        password: "",
        rememberMe: false,
        code: "",
        uuid: ""
      },
      loginRules: {
        username: [
          {required: true, trigger: "blur", message: "请输入您的账号"}
        ],
        password: [
          {required: true, trigger: "blur", message: "请输入您的密码"}
        ],
        code: [{required: true, trigger: "change", message: "请输入验证码"}]
      },
      loading: false,
      // 验证码开关
      captchaEnabled: true,
      // 注册开关
      register: false,
      redirect: undefined,
      wechatLogin: false,
      qrcodeUrl: null,
      qrInvalid: false,
      receiveScan: false,
      token: null,
      timer: null
    };
  },
  watch: {
    $route: {
      handler: function (route) {
        this.redirect = route.query && route.query.redirect;
      },
      immediate: true
    }
  },
  created() {
    this.getCode();
    this.getCookie();
  },
  methods: {
    getCode() {
      getCodeImg().then(res => {
        this.captchaEnabled = res.captchaEnabled === undefined ? true : res.captchaEnabled;
        if (this.captchaEnabled) {
          this.codeUrl = "data:image/gif;base64," + res.img;
          this.loginForm.uuid = res.uuid;
        }
      });
    },
    getCookie() {
      const username = Cookies.get("username");
      const password = Cookies.get("password");
      const rememberMe = Cookies.get('rememberMe')
      this.loginForm = {
        username: username === undefined ? this.loginForm.username : username,
        password: password === undefined ? this.loginForm.password : decrypt(password),
        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
      };
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true;
          if (this.loginForm.rememberMe) {
            Cookies.set("username", this.loginForm.username, {expires: 30});
            Cookies.set("password", encrypt(this.loginForm.password), {expires: 30});
            Cookies.set('rememberMe', this.loginForm.rememberMe, {expires: 30});
          } else {
            Cookies.remove("username");
            Cookies.remove("password");
            Cookies.remove('rememberMe');
          }
          this.$store.dispatch("Login", this.loginForm).then(() => {
            this.$router.push({path: this.redirect || "/"}).catch(() => {
            });
          }).catch(() => {
            this.loading = false;
            if (this.captchaEnabled) {
              this.getCode();
            }
          });
        }
      });
    },
    wechat() {
      const _this = this
      this.qrInvalid = false
      this.receiveScan = false
      this.wechatLogin = true
      if (this.wechatLogin === true) {
        this.token = this.guid()
        if (this.websock == null) {
          this.initWebSocket()
        } else if (this.websock.readyState === WebSocket.OPEN) {
          this.websock.close()
          this.initWebSocket()
        } else {
          this.initWebSocket()
        }
        // eslint-disable-next-line handle-callback-err
        QRCode.toDataURL('https://www.emodule.com.cn/app?token=' + this.token + '&time=' + new Date().getTime(), function (err, url) {
          _this.qrcodeUrl = url
        })
        this.timer = setTimeout(function () {
          _this.qrInvalid = true
          if (_this.websock != null && _this.websock.readyState === WebSocket.OPEN) {
            _this.websock.close()
          }
        }, 60000)
      }
    },
    userAndPwd() {
      this.wechatLogin = false
      this.qrInvalid = false
      this.receiveScan = false
      if (this.websock != null && this.websock.readyState === WebSocket.OPEN) {
        this.websock.close()
      }
    },
    guid() {
      function S4() {
        return (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1)
      }

      return (S4() + S4() + S4() + S4() + S4() + S4() + S4() + S4())
    },
    refreshQR() {
      this.wechat()
    },
    initWebSocket() {
      const wsUri = process.env.VUE_APP_WS_API + '/webSocket/' + this.token
      this.websock = new WebSocket(wsUri)
      this.websock.onerror = this.webSocketOnError
      this.websock.onmessage = this.webSocketOnMessage
    },
    webSocketOnError(e) {
      this.$notify({
        title: 'WebSocket连接发生错误',
        type: 'error',
        duration: 0
      })
    },
    webSocketOnMessage(e) {
      const data = JSON.parse(e.data)
      console.log('收到扫描' + data.msg)
      if (data.msgType === 'INFO') {
        if (data.msg === 'ok') {
          this.receiveScan = true
          this.qrInvalid = false
          if (this.timer != null) {
            clearTimeout(this.timer)
            this.timer = null;
          }
        } else if (data.msg.indexOf('token') !== -1) {
          const res = JSON.parse(data.msg)
          if (res.token) {
            this.$store.dispatch('LoginScan', res).then(() => {
              this.loading = false
              if (this.websock.readyState === WebSocket.OPEN) {
                this.websock.close()
              }
              this.$router.push({path: this.redirect || "/"}).catch(() => {
              });
            }).catch(() => {
              this.loading = false
            })
          } else {
            this.$notify({
              title: '提示',
              message: '用户不存在！',
              type: 'warning',
              duration: 5000
            })
          }
        } else {
          this.$notify({
            title: '提示',
            message: data.msg,
            type: 'warning',
            duration: 5000
          })

        }
      }
    }
  }
};
</script>

<style rel="stylesheet/scss" lang="scss">
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  background-image: url("../assets/images/login-background.jpg");
  background-size: cover;
}

.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: #707070;
}

.login-form {
  border-radius: 6px;
  background: #ffffff;
  width: 400px;
  padding: 25px 25px 5px 25px;

  .el-input {
    height: 38px;

    input {
      height: 38px;
    }
  }

  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 2px;
  }
}

.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}

.login-code {
  width: 33%;
  height: 38px;
  float: right;

  img {
    cursor: pointer;
    vertical-align: middle;
  }
}

.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}

.login-code-img {
  height: 38px;
}
</style>
